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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 26.2
edited by Admin
on 2025/02/24 14:08
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To version 17.2
edited by Admin
on 2024/12/26 15:13
Change comment: There is no comment for this version

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... ... @@ -6,12 +6,6 @@
6 6  
7 7  The BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
8 8  
9 -(% class="box errormessage" %)
10 -(((
11 -**Attention!**
12 -Behavior of contactors at different errors is configured in **corresponding contactor settings**!
13 -)))
14 -
15 15  === Overcurrent ===
16 16  
17 17  The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
... ... @@ -43,6 +43,11 @@
43 43  * the current is positive (charging) or zero, and its modulo value is less than the “Tolerant charging current” value for the “Delay before clearing the error” time;
44 44  * the current is negative (discharging) or zero, and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
45 45  
40 +(% class="box infomessage" %)
41 +(((
42 +If there is the "Overcurrent" error, the **charging **and **discharging **contactors open.
43 +)))
44 +
46 46  === Charge current limit ===
47 47  
48 48  The BMS Main 3 device can check if the charging current exceeds the estimated limit based on the [[Charge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HChargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
... ... @@ -54,13 +54,10 @@
54 54  [[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
55 55  
56 56  * Enable – a flag to enable the protection;
57 -* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
58 -* Region 1: Current difference – a value of maximum absolute current diffr, A;
59 -* Region 2: Current difference – a value of maximum relative current excess, A;
60 -* Delay before setting the error, millisecond;
61 -* Delay before clearing the error, second;
62 -* Lock – a flag to block the error until the device is restarted.
56 +* Threshold to switch from Region 1 to Region 2 – a current value at which
57 +*
63 63  
59 +
64 64  === Discharge current limit ===
65 65  
66 66  The BMS Main 3 device can check if the discharging current exceeds the estimated limit based on the [[Discharge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HDischargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
... ... @@ -74,12 +74,7 @@
74 74  In this section:
75 75  
76 76  * Enable – a flag to enable the protection;
77 -* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
78 -* Region 1: Current difference – a value of maximum absolute current diffr, A;
79 -* Region 2: Current difference – a value of maximum relative current excess, A;
80 -* Delay before setting the error, millisecond;
81 -* Delay before clearing the error, second;
82 -* Lock – a flag to block the error until the device is restarted.
73 +* Threshold to switch from Region 1 to Region 2
83 83  
84 84  === Undervoltage ===
85 85  
... ... @@ -109,6 +109,11 @@
109 109  
110 110  * the minimum voltage among all cells of the battery is greater than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
111 111  
103 +(% class="box infomessage" %)
104 +(((
105 +If there is the "Undervoltage" error, the **discharging **contactor opens.
106 +)))
107 +
112 112  === Overvoltage ===
113 113  
114 114  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -137,6 +137,11 @@
137 137  
138 138  * the maximum voltage among all cells of the battery is less than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
139 139  
136 +(% class="box infomessage" %)
137 +(((
138 +If there is the "Overvoltage" error, the **charging** contactor and **discharging **contactor open (if the “Switch off the discharging contactor on error” flag is set).
139 +)))
140 +
140 140  === Low temperature ===
141 141  
142 142  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -166,6 +166,12 @@
166 166  
167 167  * the minimum temperature among all cells of the battery is greater than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
168 168  
170 +(% class="box infomessage" %)
171 +(((
172 +If there is the "Low temperature (CH)" error, the **charging **contactor opens.
173 +If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
174 +)))
175 +
169 169  === High temperature ===
170 170  
171 171  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -195,6 +195,12 @@
195 195  
196 196  * the maximum temperature among all cells of the battery is less than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
197 197  
205 +(% class="box infomessage" %)
206 +(((
207 +If there is the "High temperature (CH)" error, the **charging **contactor opens.
208 +If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
209 +)))
210 +
198 198  === Battery cover ===
199 199  
200 200  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -220,7 +220,7 @@
220 220  
221 221  (% class="box warningmessage" %)
222 222  (((
223 -If there is the "Battery cover error", the **“Critical error” **is generated**.**
236 +If there is the "Battery cover error", the **“Critical error” **is generated **and all contactors open.**
224 224  )))
225 225  
226 226  === High humidity ===
... ... @@ -282,9 +282,9 @@
282 282  
283 283  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
284 284  
285 -(% class="box warningmessage" %)
298 +(% class="box infomessage" %)
286 286  (((
287 -If there is the “Water” error, the **“Critical error”** is generated.
300 +If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
288 288  )))
289 289  
290 290  === Logic high temperature ===
... ... @@ -340,7 +340,7 @@
340 340  
341 341  (% class="box warningmessage" %)
342 342  (((
343 -If there is the "Logic offline" error, the **“Critical error” **is generated**.**
356 +If there is the "Logic offline" error, the **“Critical error” **is generated and **all relays open.**
344 344  )))
345 345  
346 346  === Cell count ===
... ... @@ -369,7 +369,7 @@
369 369  
370 370  (% class="box warningmessage" %)
371 371  (((
372 -If there is the "Cell count error", the **“Critical error” **is generated**.**
385 +If there is the "Cell count error", the **“Critical error” **is generated and **all relays open.**
373 373  )))
374 374  
375 375  === Logic count ===
... ... @@ -397,7 +397,7 @@
397 397  
398 398  (% class="box warningmessage" %)
399 399  (((
400 -If there is the "Logic count error", the **“Critical error”** is generated.
413 +If there is the "Logic count error", the **“Critical error”** is generated and **all relays open.**
401 401  )))
402 402  
403 403  === Short circuit ===
... ... @@ -427,6 +427,11 @@
427 427  
428 428  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
429 429  
443 +(% class="box infomessage" %)
444 +(((
445 +If there is the "Short circuit" error, **charging **contactor opens (if the “Switch off the charging contactor on error” flag is set) and **discharging **contactor opens (if the “Switch off the discharging contactor on error flag” is set).
446 +)))
447 +
430 430  === High contactor temperature ===
431 431  
432 432  The BMS Main 3 device protects power contactors from overheating. To measure the temperature of the contactor, one of the thermistors connected to the X5 connector is used.
... ... @@ -455,6 +455,11 @@
455 455  
456 456  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
457 457  
476 +(% class="box infomessage" %)
477 +(((
478 +If there is the "High contactor temperature" error, **charging **contactor opens (if the “Switch off the charging contactor on error” flag is set) and **discharging **contactor opens (if the “Switch off the discharging contactor on error” flag is set).
479 +)))
480 +
458 458  === Current sensor ===
459 459  
460 460  The BMS Main 3 device checks the current sensor connection circuits. The circuits are checked for breakage and short-circuit to the +5 V supply line.
... ... @@ -486,7 +486,7 @@
486 486  
487 487  (% class="box warningmessage" %)
488 488  (((
489 -If there is the “Current sensor error”, the **“Critical error” **is generated.
512 +If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
490 490  )))
491 491  
492 492  === Power switch ===
... ... @@ -504,39 +504,13 @@
504 504  
505 505  (% class="box warningmessage" %)
506 506  (((
507 -If there is the "Power switch error", the **“Critical error” **is generated.
530 +If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
508 508  )))
509 509  
510 510  === Power fault ===
511 511  
512 -BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
535 +TBA
513 513  
514 -(% class="box infomessage" %)
515 -(((
516 -**Note:** this error can be configured only under** "Service" account**.
517 -)))
518 -
519 -To change the parameters of the power fault error, select the "Protections → Power fault" section:
520 -
521 -[[image:1739284154410-676.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]
522 -
523 -In this section:
524 -
525 -* Enable – a flag to enable the protection;
526 -* Delay before setting the error, millisecond;
527 -* Time to keep power off, millisecond;
528 -* Delay before clearing the error, millisecond;
529 -* Lock – a flag to block the error until the device is restarted.
530 -
531 -The “Power fault” occurs when the device detects a shortage or high power consumption in power supplies mentioned above. After that BMS turns off the corresponding power supply for "Time to keep power off", then it tries to enable power again.
532 -
533 -Error is removed when the power consumption is normal during “Delay before clearing the error” time.
534 -
535 -(% class="box warningmessage" %)
536 -(((
537 -If there is the "Power fault", the **“Critical error” **is generated.
538 -)))
539 -
540 540  === Charge contactor cycles ===
541 541  
542 542  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -564,6 +564,11 @@
564 564  
565 565  * the “Delay before clearing the error” time has passed since the error was generated.
566 566  
564 +(% class="box infomessage" %)
565 +(((
566 +If there is the "CH contactor cycles error" error, the **charging **contactor opens.
567 +)))
568 +
567 567  === Discharge contactor cycles ===
568 568  
569 569  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -591,6 +591,11 @@
591 591  
592 592  * the “Delay before clearing the error” time has passed since the error was generated.
593 593  
596 +(% class="box infomessage" %)
597 +(((
598 +If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
599 +)))
600 +
594 594  === Temperature sensors ===
595 595  
596 596  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -610,7 +610,7 @@
610 610  
611 611  (% class="box warningmessage" %)
612 612  (((
613 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated.
620 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
614 614  )))
615 615  
616 616  === WDT reset ===
... ... @@ -633,7 +633,7 @@
633 633  
634 634  (% class="box warningmessage" %)
635 635  (((
636 -If there is the "WDT reset" error, the **“Critical error” **is generated.
643 +If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
637 637  )))
638 638  
639 639  === Unallowable charging ===
... ... @@ -661,6 +661,11 @@
661 661  
662 662  * the battery current is zero during the “Delay before clearing the error” time.
663 663  
671 +(% class="box infomessage" %)
672 +(((
673 +If there is the "Unallowable charging" error, the **discharging **contactor opens.
674 +)))
675 +
664 664  === Stuck contactor ===
665 665  
666 666  The BMS Main 3 device protects contactors against sticking.
... ... @@ -684,7 +684,7 @@
684 684  
685 685  (% class="box warningmessage" %)
686 686  (((
687 -If there is the “Stuck contactor” error, the **“Critical error” **is generated.
699 +If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
688 688  )))
689 689  
690 690  === Contactor feedback ===
... ... @@ -708,7 +708,7 @@
708 708  
709 709  (% class="box warningmessage" %)
710 710  (((
711 -If there is the “Contactor feedback” error, the **“Critical error” **is generated.
723 +If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
712 712  )))
713 713  
714 714  === Insulation ===
... ... @@ -734,7 +734,7 @@
734 734  
735 735  (% class="box warningmessage" %)
736 736  (((
737 -If there is the “Insulation fault”, the **“Critical error”** is generated.
749 +If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
738 738  )))
739 739  
740 740  === HVIL ===
... ... @@ -754,19 +754,15 @@
754 754  * Source is ON: Upper current limit, A;
755 755  * Lock – a flag to block the error until the device is restarted.
756 756  
757 -If interlock loop breaks and its current is out of the configured ranges, the “HVIL error” is generated.
769 +If interlock loop breaks and its current is out of the configured ranges, the “HVIL error” is generated. Error clears if interlock loop is being restored.
758 758  
759 -Error clears if interlock loop is being restored.
760 -
761 761  (% class="box warningmessage" %)
762 762  (((
763 -If there is the “HVIL error”, the **“Critical error”** is generated.
773 +If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
764 764  )))
765 765  
766 766  === Critical error ===
767 767  
768 -Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
769 -
770 770  To change the critical error parameters, select the "Protections → Critical error" section:
771 771  
772 772  [[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
... ... @@ -778,10 +778,38 @@
778 778  * Delay before clearing the error, second;
779 779  * Lock – a flag to block the error until the device is restarted.
780 780  
781 -The "Critical error" signal is generated if at least one of the critical errors (see [[Errors>>doc:Battery management systems.Additional information.1\. Battery controllers\: signals and errors.WebHome||anchor="HErrors"]]) is generated during the “Delay before setting the error” time:
789 +The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
782 782  
783 -The “Critical error" signal is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
791 +* “Battery cover error”;
792 +* “Water”;
793 +* “Logic offline”;
794 +* “Cell count error”;
795 +* “ADC error”;
796 +* “Current sensor error”;
797 +* “Shunt offline”;
798 +* “Shunt error”;
799 +* “WDT reset”
800 +* “No temp. sensors”;
801 +* “Temperature sensor shorted”;
802 +* “Stuck contactor”;
803 +* “CH contactor feedback error”;
804 +* “DCH contactor feedback error”;
805 +* “Insulation fault”;
806 +* “PCH contactor feedback error”;
807 +* “CH/DCH contactor feedback error”;
808 +* “Main contactor feedback error”;
809 +* “High voltage fault”;
810 +* “Power switch error”;
811 +* “HVIL error”l
812 +* “Power fault”.
784 784  
814 +The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
815 +
816 +(% class="box infomessage" %)
817 +(((
818 +If there is the “Critical error”, **all **contactors open.
819 +)))
820 +
785 785  === General error ===
786 786  
787 787  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -802,5 +802,5 @@
802 802  
803 803  (% class="box infomessage" %)
804 804  (((
805 -The state of the “General error” can be assigned to a discrete output or to a power switch.
841 +The state of the “General error” can be output to a discrete output or a power switch.
806 806  )))
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